The first thing Red noticed on climbing out of the Jeep were the tracks: not one set but two—one clearly belonging to the smilodon and the other decidedly saurian, bigger than a raptor’s (by far) but not nearly so large as a T. Rex—which intersected and passed through each other near the entrance to the service tunnel and made a great ‘X.’ “We’ve had company, and recently,” said Corbin, crouching to examine them. “I don’t recognize this one.” He indicated those of the dinosaur. Red knelt beside him. “I do.” He scanned the area more than a little nervously. “I—I saw this animal. The night before last. It—never mind.” “Never mind?” Corbin’s eyes widened. “You saw a new animal, an entirely new threat, an unknown element, and didn’t think to share this little factoid with anyone besides you